EP2084092A2 - Method and device for gluing the free edge of a log of web material in a rewinding machine - Google Patents
Method and device for gluing the free edge of a log of web material in a rewinding machineInfo
- Publication number
- EP2084092A2 EP2084092A2 EP07849714A EP07849714A EP2084092A2 EP 2084092 A2 EP2084092 A2 EP 2084092A2 EP 07849714 A EP07849714 A EP 07849714A EP 07849714 A EP07849714 A EP 07849714A EP 2084092 A2 EP2084092 A2 EP 2084092A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- web material
- roller
- glue
- winding
- rewinding machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H19/00—Changing the web roll
- B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
- B65H19/29—Securing the trailing end of the wound web to the web roll
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/41—Winding, unwinding
- B65H2301/414—Winding
- B65H2301/4144—Finishing winding process
- B65H2301/41441—Finishing winding process and blocking outer layers against falling apart
- B65H2301/41442—Specified by the sealing medium sealing used
- B65H2301/414421—Glue or hot-melt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/41—Winding, unwinding
- B65H2301/414—Winding
- B65H2301/4144—Finishing winding process
- B65H2301/41441—Finishing winding process and blocking outer layers against falling apart
- B65H2301/41443—Specified by the place to where the sealing medium is applied
- B65H2301/414436—Specified by the place to where the sealing medium is applied onto the web
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/41—Winding, unwinding
- B65H2301/414—Winding
- B65H2301/4144—Finishing winding process
- B65H2301/41441—Finishing winding process and blocking outer layers against falling apart
- B65H2301/41444—Specified by process phase during which sealing /securing is performed
- B65H2301/414443—Sealing or securing within the winding station
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2408/00—Specific machines
- B65H2408/20—Specific machines for handling web(s)
- B65H2408/23—Winding machines
- B65H2408/235—Cradles
Definitions
- the present invention relates to a method for producing logs of web material.
- the invention relates to a method and to a machine for producing logs of web material with a glued edge.
- tissue paper is produced by continuous machines with a dry or wet system and wound in large parent reels. These are subsequently unwound feeding the web material to a rewinding machine which, from a single reel or from several plies fed from several reels unwound in parallel, produces a plurality of logs with a diameter equal to the diameter of the finished product to be placed on the market and the axial length of which is a multiple of the axial length of the rolls for consumption. These logs are subsequently cut transverse to the axis thereof into small individual rolls, which in turn are sent to packaging machines.
- gluing machines or tail sealers are provided downstream of these machines.
- the presence of these gluing machines implies an increase in the dimensions of the line and an increase in its cost, also in view of the fact that in certain cases a single rewinding machine must be combined with a double gluing machine, due to the different production speeds of these two machines. It may also be necessary to provide an intermediate storage area between the rewinding machine and the gluing machine, which in turn increases the cost and dimensions of the line.
- WO-A-2004/005173 describes a rewinding machine in which nozzles spray glue onto an area of the web material that will form the final edge of the log formed by the rewinding machine.
- glue is applied to a winding core and is transferred therefrom to the final edge of the web material.
- WO-A-01/64563 describes a rewinding machine in which glue applicator nozzles spray a glue onto the portion of the web material that will form the final edge of the log.
- WO-A-2004/046006 describes rewinding machines in which a rotating or oscillating mechanical member applies glue to the final edge of the web material.
- the glue applicator device is integral with the feeder of the winding cores and in a different embodiment the glue applicator device is integral with the severing device of the web material.
- glue is applied to the tubular winding core and transferred therefrom to the final edge of the log.
- glue is picked up from a reservoir or from another container by means of a moving mechanical member which, rotating or oscillating, during the "changeover" step transfers an adequate quantity of glue to the web material forming the final edge of the individual log.
- Changeover step is intended as the step of the winding cycle during which winding of a log is completed, the web material is severed and winding of the subsequent log commences.
- a further difficulty lies in the fact that the log on which the final edge has been wound is not subjected to high pressure to stabilize gluing of the final edge, and consequently in order to obtain adequate bonding, capable of withstanding the subsequent handling operations of the log without accidental unwinding of the final edge, greater quantities of glue would be necessary or useful with respect to the quantities that current machines are able to dispense.
- the aforesaid problems are encountered both in machines for winding web material around winding cores and in machines for winding logs without central winding cores.
- an object of the invention is to provide a method for more efficient gluing of the final free end of logs directly in the rewinding machine.
- a further object of the present invention is to provide a rewinding machine with more efficient means for applying glue to the initial and/or final edge of logs formed by this machine.
- a method for producing logs of web material comprising the steps of:
- the feed path of the web material is temporarily diverted towards a glue dispensing member so as to apply a glue to the web material by drawing the web material towards a glue dispensing member.
- the glue dispenser does not require to be controlled with an intermittent movement but can, for example, be designed in the form of a roller, which is maintained in constant rotation.
- the glue dispenser can, for example, be provided with an engraved roller that rotates at a different speed with respect to the feed speed of the web material and preferably with a lower peripheral speed with respect to the feed speed of the web material.
- the web material does not come into contact with the roller, which can rotate at a speed which is even substantially lower than the feed speed of the web material, facilitating construction of the machine and reducing dynamic problems, including those linked to the risk of centrifugation of the glue, even at high feed speeds of the web material, which in modern machines exceeds 1000 m/min.
- glue is applied to a portion of the web material before it is severed adjacent to the line along which severing of this web material will take place.
- Severing can take place in any one of the known manners, for example by control and timely variation of the rotation speed of the winding rollers; using a cutting system, using jets of air or suction systems, with pinching members that locally decelerate or accelerate the web material, with pneumatic or mechanical blades, or in any other suitable manner, as the methods with which the web material is severed are not important for the purposes of the present invention.
- the diverter member can have a speed substantially equal to the feed speed of the web material along the feed path, to reduce as much as possible any disturbance in the feed of the web material by the diverter member.
- the diverter member could also theoretically be a suction system arranged on the same side of the feed path as the glue dispenser.
- the glue dispensing member is arranged on a first side of the feed path, and the diverter member is arranged on a second side of the feed path, opposite the glue dispensing member.
- the method of the present invention is advantageously applied above all to apply glue to, or in proximity of, the final edge of the log, but it would also be possible to use the same criterion to apply glue to the portion of the web material in proximity of or coinciding with the initial free edge, to cause adhesion thereof to the new winding core. Moreover, the concept underlying the present invention could also be utilized to apply glue both to the initial edge and to the final edge of the web material so as to close the final edge of the log and secure the initial edge to the winding core of the subsequent log.
- the invention relates to a rewinding machine for producing logs of web material comprising: a winding unit; a feed path of the web material towards the winding unit; a diverter member; a device to sever the web material upon completion of winding each log; a glue dispenser to apply a glue to the web material.
- the diverter member is arranged and controlled to temporarily divert the web material towards the glue dispenser.
- the glue dispenser comprises a rotating roller arranged along the feed path of the web material and on one side thereof.
- the roller can have a substantially cylindrical surface, for example engraved according to inclined helical lines which intersect to define truncated-pyramid shaped protuberances.
- a surface engraving pattern is formed on which a large quantity of glue can be collected to form a surface film.
- the web material, diverted towards the winding roller, can "float" on this film without coming into mechanical contact with the actual roller.
- this advantageously allows the glue dispenser to rotate at a peripheral speed different than the feed speed of the web material, typically at a lower speed than the latter.
- the diverter member can be arranged upstream of the winding unit.
- This unit can comprise one or more winding rollers, for example three winding rollers defining a winding cradle inside which at least a part of the winding cycle of the log takes place.
- the diverter member can be positioned, with respect to the direction of feed of the web material, upstream of the first winding roller.
- the glue dispenser will advantageously be arranged in front of the winding member, on the opposite side of the feed path of the web material.
- the diverter member is associated with one of the rollers around which the web material is fed, preferably around a winding roller.
- the diverter member can be arranged to perform a trajectory that extends at least partly around said roller to be inserted between the web material and the roller.
- the glue dispenser will be positioned on the opposite side of the feed path of the web material, level with the roller around which this material is fed.
- the drive or guide roller of the web material can be one of the winding rollers of a peripheral or surface winding system.
- Figures 1 , 2, 3 and 4 show a first embodiment of the invention in different operating steps
- Figures 1A and 2A show enlargements of a detail in Figures 1 and 2 respectively;
- Figures 5, 6, and 7 show a second embodiment of the invention in different steps of the winding cycle;
- Figure 8 shows a detail of the glue dispenser and of the diverter member in the embodiment in Figures 5 to 7;
- Figure 9 shows a greatly enlarged portion of the cylindrical surface of the glue dispensing roller
- Figure 10 shows a local section according to X-X in Figure 9;
- Figures 11 to 14 show subsequent operating steps of a rewinding machine in a further embodiment
- Figures 15 and 16 shows the structure of the upper winding roller and of the diverter member in the embodiment in Figures 11 to 14;
- Figures 17, 18, 19 and 20 show the diverter member and operation thereof in a different embodiment. Detailed description of examples of embodiment of the invention
- Figures 1 , 1A, 2, 2A, 3 and 4 show a first embodiment of a rewinding machine according to the invention and of the relative operating method.
- reference number 1 generally indicates a rewinding machine comprising a winding unit 3 for forming logs L of a web material N.
- the logs L are formed around winding cores A, cylindrical in shape and preferably tubular, although it would also be possible to apply the invention to rewinding machines that form logs without a winding core, or in which the winding core is only present during forming of the log and is then removed to be recycled.
- the shape of the winding core can differ from cylindrical.
- the winding unit 3 comprises a first winding roller 5, a second winding roller 7 and a third winding roller, or moving winding roller 9, supported by arms 11 oscillating about an axis B, substantially parallel to the axes of the rollers 5, 7, and 9.
- the winding cradle or unit 5, 7, 9 is known per se and typical of surface or peripheral winding machines. Operation thereof will not be described in greater detail below as it is already known to those skilled in the art.
- the web material N moves along a feed path which extends around a guide roller 13 to the upper winding roller 5, and then around this roller towards the winding cradle formed by the rollers 5, 7, and 9, passing through a nip 17 defined between the winding rollers 5 and 7, and through which the winding core A is also fed.
- a glue dispenser is arranged on a first side of the feed path of the web material, between the guide roller 13 and the winding roller 5.
- the glue dispenser 21 comprises a glue dispensing roller 23 cooperating with a glue feeder 25 of a type known per se and provided with doctor blades 25A to distribute glue on the cylindrical surface of the dispenser roller 23.
- This roller rotates according to the arrow f23 with a peripheral speed preferably lower, for example, around one tenth, with respect to the feed speed of the web material N in the direction of feed indicated with fN along the feed path.
- the surface structure of the glue dispenser roller 23 will be described below with reference to Figures 9 and 10.
- a protective wall is positioned on the same side of the feed path of the web material N as the glue dispenser 21 , formed of two portions 27A, 27B reciprocally movable to define a continuous protection separating the glue dispensing roller 23 from the web material N and which, by moving apart, define an opening elongated in the direction of the axis of rotation of the glue dispensing roller 23 to allow glue to be applied to the web material N in the manner described below.
- a diverter member indicated as a whole with 31 , is arranged on the opposite side of the feed path of the web material N with respect to the side on which the glue dispenser 21 is located.
- the diverter member 31 comprises a diverter roller 33 rotating about an axis C supported by oscillating arms 35 pivoting about an axis of oscillation D substantially parallel to the axis C. Oscillation of the arms 35 is controlled by an eccentric or by a cam 37 rotating about an axis E approximately parallel to the axis D.
- the number 39 indicates a small roller forming the feeler cooperating with the eccentric or cam 37. Thrust members, for example elastic, maintain the feeler 39 in contact with the profile of the cam or eccentric 37.
- two eccentrics 37 are provided on the two side panels of the machine which can extend transversely even for several meters and in this case a feeler 39, supported idle by a respective oscillating arm 35, cooperates with each eccentric 37.
- a feeler 39 supported idle by a respective oscillating arm 35
- At the end the two oscillating arms 35 support the diverter roller 33.
- Systems with several oscillating arms 35 in parallel depending on the transverse dimensions of the machine can also be provided.
- a radial projection 33A which can, for example, be constituted by an elastic rib, by a pad or the like, is arranged on the cylindrical surface of the diverter roller 33.
- the radial projection 33A can be constituted by a single body, extending along the axial extension of the diverter roller 33, or can be formed of a plurality of projecting elements suitably aligned with one another in a direction substantially parallel to the direction of the axis C.
- the continuous projecting element or projecting elements could also be aligned according to a helical line.
- the axis C of the roller 33 can, for example, also be arranged inclined with respect to the axis of rotation of the glue dispensing roller 23. In this manner gradual contact can be obtained between the elements forming the radial projection 33A and the glue dispensing roller 23 opposite and facing the diverter roller 33.
- the radial projection 33A can have a reduced circumferential extension, as shown in the figure, or also a greater extension.
- FIGS 1 and 1A is shown how the diverter roller 33 is maintained at a certain distance from the path of the web material N so that the roller 33 and the radial projection 33A do not interfere with the web material N freely advancing along the feed path thereof.
- the walls 27A, 27B of the protection 27 are advantageously positioned contiguous to one another, to form a substantially continuous wall separating the path of the web material N from the glue dispenser 23.
- This protection can advantageously be provided on the one hand to avoid accidental contact between the web material N and the glue dispensing roller 23 and on the other to prevent paper dust or other debris from entering the glue dispensing roller 23 and also to protect the web material N from accidental sprays of glue, although these can advantageously be avoided by adopting sufficiently low rotation speeds of the roller 23.
- the diverter roller 33 can be maintained in constant rotation, at a constant or variable speed, or can be made to rotate only during the exchange steps, during which glue must be applied.
- the front surface of the radial projection 33A moves along a circular trajectory C1 with a greater radius with respect to the radius of the diverter roller 33.
- the circumference C1 on which the radial projection 33A moves can be in a position so that it is tangent to, or interferes slightly with, the cylindrical surface of the glue dispensing roller 23, as shown in detail in Figure 2A.
- Figure 2A shows a position in which the diverter roller 33, which is preferably provided with a continuous rotational motion, is in an angular position so that the radial projection 33A is exactly on the plane containing the axes of rotation of the glue dispensing roller 23 and of the diverter roller 33 respectively.
- the radial projection 33A is arranged inside the opening that is formed by moving the walls 27A, 27B away from each other, so that the web material N advancing according to the arrow fN along the feed path thereof can be diverted, under the action of the projection 33A, from its normal path against the glue dispensing roller 23.
- the layer of glue on the cylindrical surface of the glue dispensing roller 23 causes a sort of "floating" of the web material N preventing it from rubbing on the mechanical surface of the glue dispensing roller 23 which can rotate at a lower peripheral speed with respect to the feed speed of the web material N without causing breakage or damage thereto.
- the, rotation speed of the diverter roller 33 is such that the peripheral speed of the front surface lying on the circumference or more precisely on the cylindrical surface C1 of the radial projection 33A is equal to or approximately equal to the feed speed of the web material N according to arrow fN. In this way damage or even accidental tearing, due to the pressurized contact of the radial projection 33A on the web material N, is avoided.
- the eccentric 37 performs a complete rotation for each winding cycle, to take the diverter roller 33 towards the glue dispensing roller 23.
- This movement is synchronized such that when the roller 33 is in the position closest to the glue dispensing roller 23, the radial projection 33A will pass through the position shown in Figure 2.
- the web material N is diverted against the glue dispensing roller 23 to apply the desired glue to the web material.
- This application wili take place according to gluing areas defined by the shape of the radial projection 33A.
- this can be continuous or discontinuous and therefore also the glue applied to the web material N can be distributed according to a continuous line or in areas, for example according to rectilinear sections aligned axially or also according to arcs of circumference in relation to the specific gluing needs, which can depend on the quantity of glue, the type of paper or other wound web material, on the production speed, or on aesthetic requirements related to the final characteristics of the product.
- the glue application system allows, for example, the radial projection to be designed in a specific shape, to apply glue according to a pattern.
- the radial projection 33A can have a front surface reproducing a logo or written message.
- a sort of "stamp" is obtained on the final edge of the log, visible from the outside.
- the glue CL has been applied to the web material N and advances therewith towards the winding area.
- the web material N has been severed to create a final free edge LC and an initial free edge LT.
- the glue CL is in proximity of the final edge LC and will be used to seal, i.e. to close, the log L.
- the glue CL it would also be possible for the glue CL to instead be applied in proximity of the initial edge LT or both in proximity of the edge LC and in proximity of the edge LT to perform on the one hand closing of the final free edge of the log L and on the other adhesion of the initial edge LT to a new winding core A which, in a manner known per se, will be inserted in the rewinding machine.
- the glue on the two areas can, for example, be applied by providing radial projections 33A of suitable shape and position.
- radial projections 33A with an adequate circumferential extension could be utilized, so as to form strips of glue on both sides of the tearing or severing line of the web material.
- two radial projections 33A arranged in subsequent angular positions can be utilized.
- the oscillating movement of the arms 35 can also be controlled so as to maintain the axis C of rotation of the diverter roller 33 in the position closest to the axis of rotation of the glue dispensing roller 23 for sufficient time. This can be obtained by decelerating rotation of the eccentric 37, or by utilizing an eccentric, or a cam 37, oi suitable shape.
- shown in the operating sequence in Figures 5 shown in the operating sequence in Figures 5,
- the diverter roller 33 can rotate about a fixed axis C.
- the diverter roller 33 will be provided with a discontinuous rotational movement and rotation will only be activated during the exchange step or during the period required to apply glue in proximity of the initial free edge LT or of the final free edge LC or of both as described above.
- the diverter roller 33 can advantageously be made of a lightweight material, such as carbon fiber reinforced resin and have a thickness suitably limited to reduce inertia of the roller and facilitate rapid angular acceleration immediately before the glue application step.
- operation o ⁇ the rewinding machine in this case is as follows: during the step to wind the log L the web material N is fed according to the arrow fN along the feed path thereof without interfering with the diverter member 33.
- This member ( Figure 5) is in a fi ⁇ ed angular position, in which the radial projection 33A does not touch the web material N.
- the idle angular position is such that the radial projection 33A is in the farthest angular position possible with respect to the direction of rotation taken by the diverter roller 33 in the subsequent step, with respect to the active position in which this projection 33A will interfere with the feed path of the web material N. This allows a greater angle to be obtained to perform angular acceleration of the roller 33.
- the diverter roller 33 When glue must be applied to the web material N, the diverter roller 33 will be accelerated and will start to rotate according to the direction of the arrow f23 ( Figure 6) gradually taking the projection 33A towards the area of action on the web material N.
- Figure 7 shows the instant in which the radial projection 33A pushes, i.e. diverts, the web material N from the normal feed path thereof, against the glue dispensing roller 23 to transfer glue to the web material N in the desired point.
- Figure 8 shows an enlarged detail of the glue dispenser 21 with the glue dispensing roller 23 positioned on one side of the feed path of the web material N and, on the opposite side of this path, the diverter roller 33 with the radial projection 33A thereof in the idle position.
- the cylindrical surface of the glue dispensing roller 23, advantageously and preferably made of steel has an engraved surface pattern as shown in Figures 9 and 10. This pattern is defined by helical incisions, which can be obtained by two passes of a hob, and which intersect to form frusto-pyramidal shaped projections or protuberances 23A on the surface of the roller.
- the helical grooves defining the projections 23A are indicated with 23B. This configuration allows a film of glue of adequate thickness to form on the cylindrical surface of the glue dispensing roller 23.
- the structure shown in Figures 9 and 10 can be utilized in all the various embodiments of the rewinding machine described herein.
- a suction sector 5A can be provided inside the winding roller 5, positioned approximately level with the nip 17 between the winding rollers 5 and 7.
- This suction sector 5A can be utilized to generate localized suction in the area in which the sector is disposed, through holes provided in the cylindrical wall of the winding roller 5.
- the entire cylindrical side wall of the winding roller 5 is perforated.
- Insertion of the optional winding cores and severing of the web material can be obtained with one of the various known methods, as how these operations are performed is not relevant for the purposes of the invention.
- the subsequent Figures 11 to 14 show a further embodiment of the invention, which also shows a possible embodiment of the core feeder means and a possible embodiment of the web material severing means. It must be understood that these mechanisms to feed the cores and to sever the web material can also be utilized in the embodiments described with reference to Figures 1 to 8 With initial reference to Figure 11 , in this possible embodiment the path of the web material N according to the arrow fN again extends around a guide roller, once more indicated with 13, towards a winding unit formed by winding rollers 5, 7 and 9 arranged and designed as described above.
- the glue dispenser 21 with the glue reservoir 25 and the relative doctor blades 25A to distribute glue on the engraved cylindrical surface, for example as shown in Figures 9 and 10, of a glue dispensing roller 23 is arranged on one side of the feed path of the web material.
- the glue dispensing roller 23 advantageously cooperates with a diverter member constituted by radial projections 53 movable according to the arrow f53 along a circular trajectory coaxial with the winding roller 5.
- the projections 53 defining the diverter member move with a movement substantially equivalent to the one described with reference to Figures 5 to 7, i.e.
- Figure 11 also shows a channel 61 for feeding winding cores A. These cores are picked up individually by a pick-up member 63 supported by a rotor
- the pick-up member is formed of two elements 63A, 63B movable with respect to each other to grip individual winding cores A and transfer them, with a rotational movement according to the arrow f65, towards the inlet of a channel 67 defined between the cylindrical surface of the upper winding roller 5 and a rolling surface 69 substantially coaxially to the cylindrical surface of the winding roller 5.
- the height of the channel is preferably slightly less than the diameter of the cores A, which can be elastically yielding to be inserted in said channel.
- a glue is applied to the winding cores A by means of a gluing element 71 oscillating according to the double arrow f71 to be immersed in a reservoir 73 containing a glue C2 used to anchor the initial free end LT to the respective winding core A when the latter is inserted in the channel 67.
- a rotating severing device 75 Arranged underneath the surface 69 inferiorly delimiting the channel 67 is an axis of rotation G of a rotating severing device 75 provided with pressers 75A which, in a manner known per se, cooperate with the cylindrical surface of the winding roller 5 to sever the web material. Operation of the system to sever the web material described briefly here is illustrated schematically in the sequence in Figures 11 to 14 and known per se. For greater details regarding the operation of this severing system reference should be made to WO-A- 9421545.
- a suction sector 5A is again arranged inside the winding roller 5, positioned approximately in the area of the nip 17 between the winding rollers 5 and 7 for the purposes described above.
- the diverter member 53 is in the nip between the winding roller 5 and the glue dispensing roller 23, in a position to divert the path of the web material N against the glue dispensing roller 23 and thus take the web material N into contact with the film or layer of glue on the roller 23.
- a new core A has been moved towards the channel 67 and the severing device 75 has started to rotate entering an operating area, i.e. inside of the channel 67.
- the diverter member 53 has moved out of the operating area and is oriented towards the log L being completed.
- the web material N has been severed generating the final free edge LC and the initial free edge LT.
- the latter is made to adhere to the new core A inserted in the core insertion channel 67.
- the severing device 75 is withdrawing, passing under the core rolling surface 69 which, for this purpose, is comb shaped, while the severing device 75 is formed of individual elements which are inserted in the empty spaces between plates defining the comb forming the surface 69, all as known to those skilled in the art.
- the log L can still be in contact with the cylindrical surface of the winding roller 5 in this step, so that the projection forming the diverter member 53 can press the final free or tail edge LC against the outer surface of the log L to facilitate gluing.
- the log L is then unloaded and a new core A, around which the initial free edge LT of the web material starts to wind, passes through the nip 17 between the rollers 5 and 7.
- Figures 15 and 16 show a possible embodiment of the upper winding roller 5 and of the diverter member 53, as well as of the corresponding means to cause rotation thereof. More specifically, Figure 15 shows a section along a plane containing the axis of rotation of the winding roller 5 and the axis of the drive shafts that provide the motion for the winding roller and the diverter roller 53 .
- a first motor 83 is provided mounted, for example, on a side panel 85 of the machine, which transmits, through a coupling 87, the motion to a shaft 89.
- Pulleys 91 for belts 93 are mounted on the shaft 89. These provide the motion for cylindrical members 95 coaxial with the axis X-X of the winding roller 5.
- the cylindrical members 95 aligned with each other form, with the outer cylindrical surfaces thereof, the winding roller 5, and therefore it is the motor 83 that transmits rotational motion to the winding roller 5.
- the individual cylindrical members 95 are supported by bearings 97 on an inner sleeve 99 coaxial with the axis X-X and torsionally constrained to a shaft 101 which takes its motion, through a coupling 103, from a motor 105. This is the motor that transmits motion to the diverter member 53.
- the diverter member 53 is defined by a plurality of ribs 53A preferably aligned along a line parallel to the axis X-X. Each rib 53 is integral with the sleeve 99 by means of a mechanical support 53B which passes through an annular free space provided, for each rib 53A, between two contiguous cylindrical members 95.
- Figure 16 shows in a cross section according to XVI-XVI the arrangement described below of the winding roller 5, of the diverter member 53 and of the belts 93 with the respective pulleys 91 on the shaft 89.
- the diverter member 53 is inserted between the winding roller 5 and the path of the web material N diverting this material against the glue dispensing roller 23.
- the trajectory of the diverter member 53 is a circular trajectory coaxial with the winding roller 5.
- Figures 17 to 20 shows a modified embodiment.
- the operating cycle of this embodiment will not be described as it is substantially the same as the one in Figures 11 to 15.
- This embodiment nonetheless, differs from the previous one by the different way of moving the diverter member 53.
- the diverter member 53 is formed by a rib supported by a plurality of belts 111 which, as in Figures 11 to 15 for the belts 93, can advantageously be toothed belts to ensure phasing is maintained with respect to the pulleys that transmit motion to said belts.
- the belts 111 are driven around pulleys 113 mounted ( Figure 20) on a drive shaft 117 controlled, through a coupling 119, by a motor 121 supported by the side panel 85 of the machine.
- the belts 111 are also driven around pulleys 123 coaxial with the winding roller 5, i.e. arranged on an axis X-X.
- the pulleys 123 are supported by bearings 125 on a sleeve 127 coaxial with the winding roller 5.
- Mounted on the sleeve 127 are cylindrical members 129, substantially equivalent to the cylindrical members 95 but which, being coupled torsionally with the sleeve 127, rotate therewith.
- the motors 135 and 121 it is again possible, in the same manner described with reference to the motors 83 and 105 in Figure 15, to make the winding roller 5 and the diverter member 53 rotate at different speeds from each other.
- the motor 135 maintains the winding roller 5 in rotation at the desired speed, substantially equal to the feed speed of the web material N, while the motor 121 makes the belts 111 move along the closed path thereof by moving, with the desired law of motion, the diverter member 53 along this closed trajectory. Movement of the diverter member 53 is controlled to carry out the same operation performed by the diverter member 53 in the previous embodiment.
Landscapes
- Replacement Of Web Rolls (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Pretreatment Of Seeds And Plants (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000262A ITFI20060262A1 (en) | 2006-10-27 | 2006-10-27 | METHOD AND DEVICE FOR BONDING THE BOND OF A ROLL OF MATTRESS MATCHING IN A REWINDING MACHINE |
PCT/IT2007/000745 WO2008050370A2 (en) | 2006-10-27 | 2007-10-25 | Method and device for gluing the free edge of a log of web material in a rewinding machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2084092A2 true EP2084092A2 (en) | 2009-08-05 |
EP2084092B1 EP2084092B1 (en) | 2013-07-17 |
Family
ID=39204839
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07849714.6A Not-in-force EP2084092B1 (en) | 2006-10-27 | 2007-10-25 | Method and device for gluing the free edge of a log of web material in a rewinding machine |
Country Status (6)
Country | Link |
---|---|
US (1) | US8186612B2 (en) |
EP (1) | EP2084092B1 (en) |
BR (1) | BRPI0718060A2 (en) |
ES (1) | ES2427995T3 (en) |
IT (1) | ITFI20060262A1 (en) |
WO (1) | WO2008050370A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2559642A1 (en) * | 2010-04-10 | 2013-02-20 | Foshan Baosuo Paper Machinery Manufacture Co. Ltd | Coreless scroll rewinding machine without winding assisting plate |
EP2578522A1 (en) * | 2010-05-24 | 2013-04-10 | Foshan Baosuo Paper Machinery Manufacture Co. Ltd | Coreless paper roll rewinding machine |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITFI20050011A1 (en) * | 2005-01-21 | 2006-07-22 | Perini Fabio Spa | METHOD AND PLANT FOR THE PRODUCTION OF A MANUFACTURED PAPER TISSUE OR SIMILAR INCLUDING A SUPER-ABSORBENT MATERIAL |
ITFI20060072A1 (en) * | 2006-03-15 | 2007-09-16 | Perini Fabio Spa | EMBOSSING ROLLER AND ITS PROCEDURE FOR ITS PRODUCTION |
IT1391420B1 (en) * | 2008-09-24 | 2011-12-23 | Perini Fabio Spa | "REWINDING MACHINE AND WINDING METHOD" |
US9056742B2 (en) * | 2011-09-19 | 2015-06-16 | The Procter & Gamble Company | Process for initiating a web winding process |
US11220409B2 (en) * | 2011-10-31 | 2022-01-11 | Ncr Corporation | Single item removal |
ITFI20130222A1 (en) * | 2013-09-23 | 2015-03-24 | Futura Spa | DEVICE AND METHOD FOR CHECKING THE SEPARATION OF PAPER SHEETS OF PAPER RIBBONS IN REWINDING MACHINES AND REINFORCING MACHINES PROVIDED WITH A DEVICE. |
US10442649B2 (en) | 2016-03-04 | 2019-10-15 | The Procter & Gamble Company | Surface winder for producing logs of convolutely wound web materials |
US10427903B2 (en) | 2016-03-04 | 2019-10-01 | The Procter & Gamble Company | Leading edge device for a surface winder |
US10427902B2 (en) | 2016-03-04 | 2019-10-01 | The Procter & Gamble Company | Enhanced introductory portion for a surface winder |
IT201700048930A1 (en) * | 2017-05-05 | 2018-11-05 | Gambini Spa | GLUING GROUP OF A FINAL HALF OF A LOG, REWINDING MACHINE RECOMMENDING THIS GROUP AND ITS RELATED GLUING METHOD. |
IT201800005624A1 (en) * | 2018-05-23 | 2019-11-23 | Machine and method for the production of logs of paper material. | |
CN110780641A (en) * | 2019-10-22 | 2020-02-11 | 广州翔天智能科技有限公司 | Method for controlling track position time synchronization output |
IT201900025309A1 (en) | 2019-12-23 | 2021-06-23 | Futura Spa | Rewinding machine and method for the production of logs of paper material. |
IT201900025297A1 (en) | 2019-12-23 | 2021-06-23 | Futura Spa | REWINDING MACHINE AND METHOD FOR THE PRODUCTION OF LOGS OF PAPER MATERIAL. |
CN115385146A (en) * | 2022-10-17 | 2022-11-25 | 新亚新智能科技(南通)有限公司 | Rolling equipment for carbon fiber board |
Family Cites Families (9)
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GB1167767A (en) * | 1966-03-08 | 1969-10-22 | Scott Paper Co | Method and Apparatus for Winding Webs |
US3369766A (en) * | 1966-05-17 | 1968-02-20 | Scott Paper Co | Web winding |
IT1167967B (en) | 1981-08-26 | 1987-05-20 | Fabio Perini | HIGH SPEED REWINDER FOR PAPER TAPES IN SPECIES WITH CROSS PERFORATIONS |
DE69819535T2 (en) * | 1998-12-31 | 2004-09-30 | M T C - Macchine Trasformazione Carta S.R.L., Porcari | Rewinding method and apparatus for forming web rolls and the like |
IT1314581B1 (en) | 2000-03-03 | 2002-12-20 | Perini Fabio Spa | COMPACT REWINDER FOR THE PRODUCTION OF ROLLS OF WRAPPED MATERIALS AND RELATED METHOD |
ITFI20020119A1 (en) | 2002-07-08 | 2004-01-08 | Fabio Perini | REWINDING MACHINE AND METHOD FOR MANUFACTURING VARIOUS SIZE PAPER STICKS |
ITFI20020227A1 (en) | 2002-11-20 | 2004-05-21 | Perini Fabio Spa | REWINDER MACHINE WITH A GLUING DEVICE FOR GLUING THE FINAL FLAP OF THE ROLL FORMED AND RELATED WINDING METHOD |
ITFI20050032A1 (en) * | 2005-03-01 | 2006-09-02 | Perini Fabio Spa | METHOD AND PROVISION FOR THE JOINT OF PAPER SAILS |
US7546970B2 (en) * | 2005-11-04 | 2009-06-16 | The Procter & Gamble Company | Process for winding a web material |
-
2006
- 2006-10-27 IT IT000262A patent/ITFI20060262A1/en unknown
-
2007
- 2007-10-25 EP EP07849714.6A patent/EP2084092B1/en not_active Not-in-force
- 2007-10-25 ES ES07849714T patent/ES2427995T3/en active Active
- 2007-10-25 WO PCT/IT2007/000745 patent/WO2008050370A2/en active Application Filing
- 2007-10-25 US US12/311,967 patent/US8186612B2/en not_active Expired - Fee Related
- 2007-10-25 BR BRPI0718060-8A2A patent/BRPI0718060A2/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2008050370A2 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2559642A1 (en) * | 2010-04-10 | 2013-02-20 | Foshan Baosuo Paper Machinery Manufacture Co. Ltd | Coreless scroll rewinding machine without winding assisting plate |
EP2559642A4 (en) * | 2010-04-10 | 2014-01-15 | Foshan Baosuo Paper Machinery Manufacture Co Ltd | Coreless scroll rewinding machine without winding assisting plate |
EP2578522A1 (en) * | 2010-05-24 | 2013-04-10 | Foshan Baosuo Paper Machinery Manufacture Co. Ltd | Coreless paper roll rewinding machine |
EP2578522A4 (en) * | 2010-05-24 | 2014-01-15 | Foshan Baosuo Paper Machinery Manufacture Co Ltd | Coreless paper roll rewinding machine |
Also Published As
Publication number | Publication date |
---|---|
BRPI0718060A2 (en) | 2013-11-19 |
US20100025515A1 (en) | 2010-02-04 |
WO2008050370A3 (en) | 2008-06-19 |
ES2427995T3 (en) | 2013-11-05 |
ITFI20060262A1 (en) | 2008-04-28 |
WO2008050370A2 (en) | 2008-05-02 |
EP2084092B1 (en) | 2013-07-17 |
US8186612B2 (en) | 2012-05-29 |
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